LOS ANGELES , California -LRB- CNN -RRB- -- After about 30 hours of deliberation , a jury on Monday convicted music producer Phil Spector of second-degree murder in the death of actress Lana Clarkson more than six years ago .

Phil Spector will not remain free on bail pending his May 29 sentencing .

Wearing a black suit with a red tie and pocket square , Spector showed no reaction as the verdict was announced . Now 69 , he faces a sentence of 18 years to life in prison when he is sentenced May 29 .

Asked if he agreed to the sentencing date , Spector quietly answered , `` Yes . ''

Prosecutor Alan Jackson said he believed the jury reached the correct verdict , and he acknowledged the strength and backing of Clarkson 's family . But defense attorney Doron Weinberg said Spector 's defense team disagreed and planned to appeal .

`` We do n't believe justice was done , '' Weinberg said .

Superior Court Judge Larry Paul Fidler declined to allow Spector to remain free on bail pending sentencing , citing Spector 's years-long `` pattern of violence '' involving firearms . Watch the lawyers give their views of the verdict ''

`` This was not an isolated incident , '' Fidler said , noting Spector 's two previous firearm-related convictions from the 1970s . `` The taking of an innocent human life , it does n't get any more serious than that . ''

Spector 's wife , Rachelle , was in the courtroom to hear the verdict Monday , as was Clarkson 's mother , Donna .

Clarkson , 40 , was found dead , slumped in a chair in the foyer of Spector 's Alhambra , California , mansion with a gunshot wound through the roof of her mouth in February 2003 .

A mistrial was declared in Spector 's first trial in September 2007 . After deliberating 15 days , jurors told Fidler that they were unable to reach a verdict . Spector was also charged with second-degree murder in that trial . Jurors deadlocked 10-2 in favor of conviction .

In closing arguments at the retrial , prosecutor Truc Do called Spector `` a very dangerous man '' who `` has a history of playing Russian roulette with women -- six women . Lana just happened to be the sixth . ''

Weinberg argued that the prosecution 's case hinged on circumstantial evidence . He said the possibility that Clarkson committed suicide could not be ruled out .

Do pointed out , however , to jurors that Clarkson bought new shoes on the day of her death -- something a suicidal woman would not have done , the prosecutor said .

A female juror who declined to be identified told reporters the jurors considered all the evidence and testimony to reach their verdict .

`` This entire jury took this so seriously , '' she said with tears in her eyes , before adding that `` it 's tough to be in a jury , '' because another person 's life is in the jury 's hands .

Clarkson starred in the 1985 B-movie `` Barbarian Queen '' and appeared in many other films , including `` DeathStalker , '' `` Blind Date , '' `` Scarface , '' `` Fast Times at Ridgemont High '' and the spoof `` Amazon Women on the Moon . '' She was working as a VIP hostess at Hollywood 's House of Blues at the time of her death .

In the 2007 trial , Spector 's attorneys argued that Clarkson was depressed over a recent breakup and grabbed a .38 - caliber pistol to kill herself while at Spector 's home .

But prosecution witnesses painted Spector as a gun-toting menace . Five women took the stand and claimed he had threatened them with firearms . His driver testified that he heard a loud noise and saw the producer leave the home , pistol in hand , saying , `` I think I killed somebody . ''

Spector 's retrial began in October . Fidler ruled that jurors could consider the lesser charge of involuntary manslaughter against Spector .

Spector 's professional trademark was the `` Wall of Sound , '' the layering of instrumental tracks and percussion that underpinned a string of hits on his Philles label -- named for Spector and his business partner , Lester Sill -- in the early 1960s . iReport.com : What do you think of this verdict ?

The roaring arrangements were the heart of what he called `` little symphonies for the kids '' -- among them No. 1 hits like the Ronettes ' `` Be My Baby '' and the Righteous Brothers ' `` You 've Lost That Lovin ' Feelin ' . ''

Spector co-produced the Beatles ' final album , `` Let It Be , '' and worked with ex-Beatles George Harrison and John Lennon on solo projects after the group broke up . His recording of Harrison 's 1971 benefit concert for war relief in Bangladesh won the 1972 Grammy award for album of the year .

Spector has won two Grammy Awards and was inducted into the Rock and Roll Hall of Fame in 1989 , but he stayed out of the public eye for two decades before his 2003 arrest in Clarkson 's death .

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NEW : Defense says it will appeal ; `` We do n't believe justice was done ''

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Phil Spector guilty of second-degree murder at retrial

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He faces 15 years to life in prison for shooting death of Lana Clarkson

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Renowned music producer accused in death of actress in 2003